High grade natural stone plates with a heat conductor let into the 30mm thick marble or soapstone plate.

The heat conductor is insulated with Teflon and is routed into the channel carved into the back of the heater. That safeguards an even warming through of the stone and a large surface that actively radiates heat. Overheating protection through two safety temperature limiters. 4mm thick insulating plate on the back of the device. The concealed mounting points are invisible from the front.